if x=1 - \sqrt{2} [/tex]
Then find -
1)x+1/x
2)x-1/x
3)x^2+1/x^2
4)x^2-1/x^2
5)x^4+1/x^4
6)x^4-1/x^4
Anonymous:
..
x=1-sqrt(2)
1/x=1/1-sqrt(2)
rationalising we get 1/x=-1-sqrt(2)
x+1/x=-2sqrt(2)
x-1/x=2
twice squaring gives answer to the question
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